[mark cookman]"with FCP7 multiple editors can use the same clip (located on a shared drive) in each of their timelines and edit with it concurrently, meanwhile an FX artist is able to update the clip, the changes are reflected in any edits referencing that media."

If you do that with FCP7, the clip will go offline and gets automatically reconnected.

Guess what? It works exactly the same in FCPX now. So I guess the future is now, eh?